# My 64 Gb Micro SdXC Not recognized by Phone or PC.

**URL:** <https://forums.sandisk.com/t/my-64-gb-micro-sdxc-not-recognized-by-phone-or-pc/34766>\
**Category:** SD | microSD | CFast | CFexpress | CompactFlash\
**Created:** [January 9, 2013, 11:46am UTC](https://forums.sandisk.com/t/my-64-gb-micro-sdxc-not-recognized-by-phone-or-pc/34766 "2013-01-09T11:46:35Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![martin1980](https://avatars.discourse-cdn.com/v4/letter/m/b9bd4f/32.png) [@martin1980](https://forums.sandisk.com/u/martin1980)\
**Post date:** [January 9, 2013, 11:46am UTC](https://forums.sandisk.com/t/my-64-gb-micro-sdxc-not-recognized-by-phone-or-pc/34766/1 "2013-01-09T11:46:35Z")

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Hello my name is Martin and I have a problemo.

I formatted my card into EXFAT but now phone and PC running W7 wont regognize it anymore.&nbsp;

If I plug it in my pc I hear that sound but it will not pop up as a drive and device management it is visible as a usb card but my phone doesn’;t see it at all.

Please do help me it cost 80 euros and I m scared I cant use it anymore.

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**Author:** ![tapeworm](https://avatars.discourse-cdn.com/v4/letter/t/ea5d25/32.png) [@tapeworm](https://forums.sandisk.com/u/tapeworm)\
**Post date:** [January 9, 2013, 4:29pm UTC](https://forums.sandisk.com/t/my-64-gb-micro-sdxc-not-recognized-by-phone-or-pc/34766/2 "2013-01-09T16:29:23Z")

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> @martin1980 wrote:

> &nbsp;

> I formatted my card into EXFAT

Why? They come formatted from the factory as exFAT.

> @martin1980 wrote:

> &nbsp;

> . . . but now phone and PC running W7 wont regognize it anymore.&nbsp;

You may need a Windows patch/update on your computer to recognize the newer format, or your method/software to re-format it was faulty.&nbsp;Your phone may or may not support exFAT, depending on how old it is. There may or may not be a patch/firmware update for it to do so. Check with your phone mfg. website.

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**Author:** ![axlmyk](https://avatars.discourse-cdn.com/v4/letter/a/f6c823/32.png) [@axlmyk](https://forums.sandisk.com/u/axlmyk)\
**Post date:** [January 16, 2013, 4:48pm UTC](https://forums.sandisk.com/t/my-64-gb-micro-sdxc-not-recognized-by-phone-or-pc/34766/3 "2013-01-16T16:48:21Z")

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What phone is it?

I put a 64g SDXC card in my Samsung GS3. Took the battery out first, and then did NOT format it. Has been working fine.

This is after getting a RMA on a 32g SDHC card that went bad in the phone.

I believe that if you’re going to use one of these cards in your phone, leave it there and use a different method to transfer files.

There have been an extraordinary amount of complaints about Samsung GS3 phones and Sandisk SDHC cards.